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(No Model.) 2 Sheets-Sheet 1.

L. Gr. WOOLLEY.

,GOMBINBD STEAM ENGINE AND ELECTRIC GENERATOR.

.No. 286,985. v PatentedOot. l6, 1883.,

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L. G.-WO0LLEY.

COMBINED STEAM ENGINE AND ELECTRIC GENERATOR. No. 286.985. Patented Oct. 16, 1883.,

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N. PETERS. Pmm-Lim a lw. wmhingmn, 0, C.

UNITED STATES PATENT OFFICE.

LEONIDAS G. \VOOLLEY, OF DAYTON, OHIO, ASSIGNOR, BY WESNE ASSIGN- MENTS, TO THE OHIO POXVER AND LTGHT COMPANY, OF SAME 'ILACE.

COMBINED STEAM-ENGINE AND ELECTRIC GENERATOR.

SPECIFICATION forming part of Letters Patent No. 286,985, dated October 16, 1883.

Application filed June 21,1583.

To (all /1/0720 it may concern/.-

Be it known that I, LEO'NIDAS G-.WooLLnY, of Dayton, Montgomery county, Ohio, have invented a new and useful Combined Steam- 5 Engine and. Electric Generator, of which the following is a specification.

The invention is designed to secure economy of space, material, and motive force, together with avoidance of excessive heat in the cur- IO rent-carriers, and, while more especially intended for operating electric lights on locomotires and steamboats, is also applicable to stationary plants employed in electric lighting and other uses to which electric currents are applied.

In the accompanying drawings, Figure 1. is a side view, and Fig. 2 a front elevation, of a combined steam-engine and electric generator embodying my invention.

A represents a castiron base or bed-plate; B, a steam-engine whose cylinder is so attached by means of bolts and nuts 0 D to said bedplate as to leave a ventilating-space, E, between the bed-plate and the superincumbent steam-cylinder.

Securely screwed or bolted to the bed-plate are two vertical posts, F F, and one oblique post, G. The posts F F are wrought-iron rods or cylinders, whose upper ends screw into eyes 71 of two latcrally-extending pole-pieces, H H, which are prelerablycomposed of soft cast iron, and which support the front bearing, I, of the steam-engine cranleshal't K, whose portion within the pole-pieces carries an armature, L, of any desired type, with which said pole-piecesarc, efcourse, concentric. Thepost G, (which is preferably manufactured from gas pipe or other wrought-iron tubing) screws at its upper end into the rear bearing, .T, of the crank-shalt K, which bearing is bolted to the rear side of the polar extensions H H. The field an d armature are, of course, provided with suitable helices, M N. The shaI't-bearin are composed of any suitable non-magnetic metal, such as phosphor-bronze.

The described adaptation of a steam-engine and an electriccurrent generator possesses several important advantages. For exmnple:

The explained utilization of the crank-shalt (Xe model.)

pedestals as the field-cores of the generator dispenses with thenecessity and saves theroom and expense of additional pieces of metal for the cores, while th e motor and work are brought into the most advantageous relation for economy of space, power, and. material, with freedom from vibration, overheating, &c. The line of direction ol' engine-thrust being brought into closest possible proximity to the principal shaft-bearing further tends to reduce side strain and vibration to a minimum, and to economize space, material, and motive power.

The great importance of guarding the holdhelix from extraneous heatinginfluences is apparent in view of the well-known tendency of electric-cm'rent carriers to suffer increase of temperature. The evil of extraneous heating is usually sought to be avoided bymore or less distant location of the steam-engine and currentgenerator, but such remedy being impracticable within the compact dimensions of the present device, a means of thermalinsulation that does not seriously detract from the desired compactness becomes otvital necessity. These conditions are believed to be satisfied by the construction. hereinbel'ore described. 7 5

The abovedescribed preferred form of my invention may be modified in various non-essential particulars. For instance: a filling ol' asbestus or other substance of slow heat-conducting power may take the place of the ven- S0 tilatingspace E between the bed-plate and the superincumbent steam-cylimler, or projecting teatsflinstead of the described nuts,1nay be em ployed, while hot air or other source of power may be used in place of steam. S

1 claim herein as new and oi myinvetition- 1. In a con'ibined steam-engine and electric generator, the combination, with the attached bed-plate, and with the attached field-magnet pole-pieces, that support the journal bearings 0 of the combined armature and crank shalt, of the engine-pedestals F F, said pedestals being wound with the field-helix wire, substantially as and for the purpose set forth.

2. In a combined steam-engine and electric generator, the combination, with steam-engine crank-shaft K, (carrying armature T1,) of the lateral projections H H, (serving as pole-pieces h r 2 I 286,985

and shaft-bearings,) from the columns FF, generator, the combination, with bed-p1ate A, (serving as field-magnet cores and engine-pedhaving the attached field-magnet cores F F, estals,) substantially as set forth. of the bolts 0 and nuts D, and the thereby at- 3.. In a combined steam-engine and electric tached and thermally-insulated steam-engine 15 5 generator, the combination of bed-plate A, 13, substantially as set forth.

steanrengine B, the pedestal field-magnet cores In testimony of which invention I hereunto F F, having the lateral polar extensions H H, set my hand.

the rear post, G,- and the crank-shaft K, with LEON I DAS Gr. VVOOLLEY. its attached armature L, substantially as set Attest: 1o forth.. G130. H. KNIGHT,

4. In a combined steam-engine and electric SAML. S. CARPENTER. 

